Clamping device.



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Patented J une 13 c. A. RAHMEL.'

` CLAMPING DEVICE. 1 APPLICATION FILED IUNE 23.1914-` RENEWED N`0V. 6.1915.

Patented June 13, 1916.

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cani. A. RAHMEL, or narration, onro.

CLAIVIPING DEVICE.

Application filed June 23, 1914, Serial No. 846,774. Renewed November 6,1915.

To all whom t may concern:

Be it known that I, CARL A. RAHMEL, a citizen of the United States, anda resident of Defiance, in the county of Defiance and State of Ohio,have invented certain new and useful Improvements in Clamping Devices,of which the following is a specification.

My invention relates to means for quickly clamping and unclampingmaterial being worked in desired positions on wood yand metal workingmachines, being shown in connection with a chain saw mortiser, and themain obj ect thereof is to provide a clamp which securely holds the workbut which, when desired, may be immediately unclamped to permit the workto be moved into other positions.

A further object is to provide a cam for actuating the clamping slide.

A further object is to provide a resilient clamping member when mydevice is used with wood working machinery, so as not to mar the work.

A further object is to provide an adjustable support for the clamp. f

A further object is to provide an adjustable stop, whereby the work maybe accurately positioned.

A further obfect is to provide means for normally holding said stop inoperative position.

A further object is to provide a lever for making said stop inoperative,in order to move the work, and which lever is operable by the same handof an operator used to release the clamp, thus leaving his other handfree to shift the work.

My invention is fully described in the following specification, of whichthe acoompanymg drawings form a part, in which the separate parts aredesignated by the same reference characters in each of the views, and inwhich Figure 1 is a perspective view of my invention in position for useon a chain saw mortising machine, in clamping position; Fig. 2 is anenlarged plan view thereof; Fig. 3 is a section taken on the line 3-3 ofFig. 2; Fig. 4 is a section taken on the line #1f-4e of Fig. 2, showingthe clamp in released position, and also the stop; and Fig.

Specification of Letters Patent.

Patented June 13, 1916.

Serial No. 60,168.

5 is a fragmentary, front, elevation thereof, with the clamp in releasedposition.

ln the drawings forming a part of this application I have shown a woodworking machine provided with the work table 10, and vertically movablechain-saw 11, and 1 arrange my invention on said table, adjacent thefront edge thereof, said device 'comprising a base'12 having slots 13therein through which are passed bolts ,14 securedin the table 10,*thuspermitting the adjustment of the base 12 with respect to the table10,and said base vis provided with three uprights 15, 16 and 17, andthrough the two first of which passes a pivot pin 18 for a cam-dis 19having a handle 20, and the inner sides of the uprights and 16 are provie with beveled grooves 21 in inward projections 22.

Slidable between the uprights 15 and 16 is a bar 23 resting upon theprojections 22 thereof and having a downwardly extended, beveled, key211 sliding in the grooves r21, and said bar is provided with asegmental recess 25 within which the cam-disk 19 is arranged, and itwill be seen that when the handle 2O is moved upwardly, from theclamping position shown in Fig. 3, to the position shown in Fig. 4, thebar 23 is forced outwardly and, in the reverse movement, inwardly.

Secured to the inner end of the bar 23 is a head 26 in which two dowels27 are slidably arranged, said dowels being carried by a plate 28 whichmay be of any length and is adapted to bear upon the work, and I alsoprovide rubber or other resilient sheets 29 between the head 26 and theplate 28 whereby a yielding pressure results against the work whenclamped infposition.

Rotatable in the uprights 16 and 17 is a rod 30 having a groove 31 for aportion of its length to position a set-screw 32 in a stop 33 for thework, said stop being formed approximately on a segment of a circlewhereby the weight of the extending arm 34 will cause the same to fallout of operative position by gravity, but to maintain said stop inoperative position I provide a spring 35 secured, at one end, to an eyein the upright 17 and at the other end to an arm 36 on the rodr 30 and,to move said stop Q0 moved into be grasped by the same hand of usedtomove the handle 20, and both the clamp and stop be simultaneously movedinto `inoperative positions, but, when the lever 37 is released, thespring 35 again p position, and,

ative position, as already explained.

he work is placed upon the table l0, and the base l2 suitably adjustedand the handle operative position, at which time the machine may beactuated and, after such actuation, Vthe clamp may be released with onehand and the other hand used to neously performed, as

thus be seen that l provide a clamp which is readily attached to anymachine,

kable thereon, and which also combines the p the scope of the followingclaims, without departing from the spirit of my invention orV Copies ofthis patent may be obtained for've cents each, by

. nectionV with v1,1saes2 sacrificing reservation,

What I claim as new, and desire to secure by Letters Patent, is fr l.The combination with a table for work having a rigid verticalmember; ofa clamp, comprising` a base provided with a plurality of uprights, a barslidably engaged between two of said uprights, a plate in resilientconthe inner end of said bar, an adjustable stop carriedv by two of saiduprights, Vmeans for actuating said bar, and meansfor actuating saidstop, saida'ct'uating means being in approximate juxtaposition.

2. The combination with a table Vfor work having a rigid verticalmember; of a clamp, comprising a base provided witha plurality ofuprights, a 1 bar Vslidable betweenV two thereof; a plate in resilientconnection with the inner Yend of said bar, a rod supported by two ofsaid uprights, a work stop slid` its Vadvantages and, with such Vablyadjustable thereon, means for normally n maintaining said stop inoperative position, means'for moving the same out of such posi` tion,and means for` actuating said bar inwardly and outwardly, toward andfrom said vertical member, said bar actuating means and said stop movingmeans being in approximate juxtaposition, whereby Vboth may be engagedby one hand of an operator. In testimony whereof I havek signed my nameto this specification in the presence of the subscribing witnesses. f,

CARL A. RAHMEL. YWitnesses:

ALBIN J THUNEMANN,

H. M. EVANS.

addressing the Commissioner of Patents,

Washington, D. C.

